Претрага
262 items
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The external aggregation Newton's method for solving nonlinear equations and applications
Marija Paunović, Dejan Ćebić, Nebojša Ralević. "The external aggregation Newton's method for solving nonlinear equations and applications" in The University Thought - Publication in Natural Sciences, Centre for Evaluation in Education and Science (CEON/CEES) (2020). https://doi.org/10.5937/univtho10-24982
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Development Of The Serbian Geological Resources Portal
... pages for database search. Web GIS For several projects online GIS maps were created with the ArcGIS extension: HTML ImageMapper NG2, allowing full control over cartographic quality and functionality. This approach was implemented for small to medium sized GIS Projects, whose geo data have little need ...Ranka Stanković, Jelena Prodanović, Olivera Kitanović, Velizar Nikolić. "Development Of The Serbian Geological Resources Portal" in Proceedings of the 17th Meeting of the Association of European Geological Societies, Belgrade, Serbia : The Serbian Geological Society (2011)
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Advantages and challenges in presenting mathematical content using EDX platform
... main components. The first one is a portal aimed for course enrolment and usage of course materials, and the second (edX Studio) is a backend control panel for creating and updating published materials [5]. edX Studio allows creating and combining different type of content, such as text, video ...
... MATHEMATICAL CONTENT USING EDX-BAEKTEL PLATFORM Over the last few years, mathematical content on the web is increasing, which means that production and exploitation of mathematical content using information technology (IT) is in progress [6]. Experts stress the importance of using TPACK ...Marija Radojičić, Ivan Obradović, Ranka Stanković, Olivera Kitanović, Roberto Linzalone. "Advantages and challenges in presenting mathematical content using EDX platform" in The Seventh International Conference on e-Learning (eLearning-2016), Belgrade : Metropolitan University (2016)
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An Approach to Management Decision Support: The Coal Mine Pljevlja Management Information System
In this paper we describe the approach that has been used in the development of the Management Information System (MIS) in the Coal Mine Pljevlja in Montenegro. The methodology of this approach was based on new information technologies and management techniques which have already been successfully applied in other related fields. Its main goal was to introduce modern management techniques to mining, adapted to specific features of the mining industry, its operations and environment, thus enabling the tactical management ...... ; monitoring of coal production; managing of equipment maintenance information; and MIS - management information and decision support system. TIS provides real time information generation during the production process organized in shifts for improved management control. As each machine works ...
... Monitoring of coal production The system for monitoring of production and preparation of coal is designed in such a way as to collect, register and present for perusal, mostly to those who manage coal production, all of the most significant production parameters, production events and circumstances ...
... reporting. All production capacities in the technological chain of production are defined on basis of data on equipment and locations. The technological chain of production is being elaborated through production operations. The solution encompasses the data on all production capacities in the ...Božo Kolonja, Ranka Stanković, Filip Vuković, Ivan Obradović. "An Approach to Management Decision Support: The Coal Mine Pljevlja Management Information System" in Proceedings of the Fifteenth International Symposium on Mine Planning and Equipment Selection, Torino, Italy, September 2006, Vol. 1,, Balkema (2006)
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Self-Engineering: Possibilities for Maintenance Operations in the Mining Machines Industry
Self-engineering is a relatively new branch of knowledge that aims to understand how systems could “autonomously” re-configure or repair themselves without the intervention of the operators. A direct field of application is within the maintenance spectrum. Having systems or machines capable of self-detecting or even self-repairing could represent a game-changer, in capital asset fields such as the mining industry in particular. This paper aims to investigate the possible benefits and challenges of self-engineering / self-maintenance concerning mining machines, specifically bucket-wheel ...self-engineering, self-maintenance, maintenance operations, mining industry, bucket-wheel excavator, gearbox revitalizationSteven Manders, Milorad Pantelić, Vladimir Milisavljević, Alberto Martinetti. "Self-Engineering: Possibilities for Maintenance Operations in the Mining Machines Industry" in SSRN Electronic Journal, Elsevier BV (2021). https://doi.org/10.2139/ssrn.3945979
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New approach to correlation of hydrocarbon reservoirs in sandstone layers of the "Mokrin" field"
Saša Ivanišević, Dejan Radivojević (2018)геофизички каротаж, депозиционе средине, лежишта угљоводоника, миоцен, пост‐ рифтнo, секвенциона стратиграфија... opportunities of the Pannonian Basin”, 65–76. Juhasz, Gy., Pogacsas, Gy., Magyar, I., Vakarcs, G., 2007, Tectonic versus climatic control on the evolution of fluvio‐deltaic systems in a lake basin, Eastern Pannonian Basin.Sedimentary Geo‐ logy 202, 72–95. Matenco, L. C., ...
... and geophysical data contributes to risk reduction in exploration, and also to the more efficient planning of reservoir development and production. ЛИТЕРАТУРА / REFERENCES Ivanišević, S., Radivojević, D., 2018, Upper Miocene depositional environments of the Kikinda‐Mokrin high ...Saša Ivanišević, Dejan Radivojević. "New approach to correlation of hydrocarbon reservoirs in sandstone layers of the "Mokrin" field"" in 17th Serbian Geological Congress, Vrnjačka Banja, 17-20 maj 2018, Srpsko geološko društvo (2018)
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Application of Project Management Process on Environmental Management System Improvement in Mining-Energy Complexes
... was implemented through the network of automatic stations for monitoring air quality, in accordance with the Decree on establishing the Air Quality Control Program in the state network and in local networks of area monitoring. Automatic monitoring was conducted for measuring the concentration of sulfur ...
... cumulative—according to the dynamics of development; risks in planning or operative management stages; risks that are manageable; and risks beyond the control of the management process) [31,32]. Risk management of a mining and energy complex should be based on the organized process of risk identification ...
... cumulative—according to the dynamics of development; risks in planning or operative management stages; risks that are manageable; and risks beyond the control of the management process) [31,32]. Risk management of a mining and energy complex should be based on the organized process of risk identification ...Jelena Malenović Nikolić, Dejan Vasović , Ivana Filipović , Stevan Mušicki, Ivica Ristović . "Application of Project Management Process on Environmental Management System Improvement in Mining-Energy Complexes" in Energies (2016). https://doi.org/https://doi.org/10.3390/en9121071
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Prognoza operativne efikasnosti aktivnog podzemnog rudnika zasnovana na teoriji sivih sistema
Svetlana M. Štrbac-Savić (2016-06-10)Efikasnost predstavlja preduslov za opstanak svake rudarske kompanije, posebno u uslovima izuzetno konkurentnog trţišnog okruţenja kao što je to rudarska industrija. Efikasnost oznaĉava sposobnost kompanije da ispuni svoje kratkoroĉne ili dugoroĉne ciljeve. Operativna efikasnost se definiše kao odnos izmeĊu ulaznih parametara potrebnih za odvijanje proizvodnje i pokazatelja dobijenih proizvodnjom. U kontekstu rudarskog poslovanja, operativna efikasnost se odnosi na vreme potrebno da se mineralno dobro transformiše u novĉana sredstva. Visoka operativna efikasnost se postiţe kada se ostvari prava kombinacija karakteristika ...podzemni rudnik, operativna efikasnost, prognoza, teorija sivih sistema, stohastiĉke diferencijalne jednaĉine, simulacija... [CHENG86] Cheng Biao, The grey control on industrial process, Journal of Huangshi College, 1, pp. 11-23, 1986. [ĈUPIĆ08] Milutin Ĉupić, Milija Suknović, Odluĉivanje, Fakultet organizacionih nauka, 2008. [DENG82] J. Deng, Control problems of Grey Systems, Systems and Control Letters, 5, pp. 288-294 ...
... associated with the forecasting process. This paper investigates the relationship between ore production rate, fixed costs, revenues, production costs, working days, and degree of use of production capacity, as input variables, and Degree of Operating Leverage (DOL) as indicator of operational ...
... normal and uniform distribution. Geometric Brownian motion is used to define future values of production costs. Values of ore production rate, fixed costs, working days, and degree of use of production capacity are estimated by expert‘s knowledge. By simulating a forecasting system, we imitate ...Svetlana M. Štrbac-Savić. "Prognoza operativne efikasnosti aktivnog podzemnog rudnika zasnovana na teoriji sivih sistema" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-06-10)
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Soil oscillation law parameter determination with the application of Lagrange’s theorem at “Kovilovača“ open pit
... effect of blasting, effect of air waves, sound effect, scattering the blasted rock mass, and similar are assumed. In order both to evaluate and control the seismic effect of blasting, as well as to plan it, the determi- nation of soil oscillation law is required, with the strike: mine field - facilities ...
... deter- mination of the soil oscillation velocity is enabled for each blast operation in ad- vance, thus blasting is, as regards seismic effect, under control, which gives an op- portunity to plan the magnitude of shock waves for each future blast operation [2]. mailto:suzana.lutovac@rgf.bg.ac.rs;%20 ...
... of extraction of mineral raw materials have a growing application with the aim to increase the quantity of blasted mass, and to reduce costs of production as well. Increas- ing the quantity of blasted mass requires the use of large amounts of explosives, leading to an increase in the negative effects ...Suzana Lutovac, Nebojša Vidanović, Čedomir Beljić, Zoran Gligorić. "Soil oscillation law parameter determination with the application of Lagrange’s theorem at “Kovilovača“ open pit" in Mining and Metallurgy Engineering Bor, Bor : Mining and Metallurgy Institute Bor (2015). https://doi.org/10.5937/MMEB1503053L
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Old or New, We Repair, Adjust and Alter (Texts)
Cvetana Krstev, Ranka Stanković (2020)U ovom radu predstavljamo kako se e-rečnici i kaskade transduktora konačnih stanja implementirani u alatu Unitex mogu koristiti za rešavanje tri problema transformacije teksta: ispravljanje tekstova nakon OCR-a, vraćanje dijakritičkih znakova i prebacivanje između različitih jezičkih varijanti.ispravka teksta, OCR greške, restauracija dijakritika , jezičke varijante, elektronski rečnik, transduktori konačnih stanja... Infotheca Vol. 19, No. 2, December 2019 Scientific paper References Blair, Charles R. “A program for correcting spelling errors”. Information and Control Vol. 3, no. 1 (1960): 60–67 Bledsoe, W. W. and I. Browning. “Pattern Recognition and Reading by Machine”. In Papers Presented at the December 1-3 ...
... php/Infoteka/article/view/2019.19.2.4_en Miller, George A and Elizabeth A Friedman. “The reconstruction of muti- lated English texts”. Information and Control Vol. 1, no. 1 (1957): 38–55 Neme, Alexis Amid and Sébastien Paumier. “Restoring Arabic vowels through omission-tolerant dictionary lookup”. Language ...
... type are lan- guage dependent and are the result of user’s (mis)understanding of relevant orthographic rules. Both types of errors can result in production of either valid (but not intended) or invalid words. Akin to typing errors, OCR errors are local: one or more characters are erroneously recognized ...Cvetana Krstev, Ranka Stanković. "Old or New, We Repair, Adjust and Alter (Texts)" in Infotheca, Faculty of Philology, University of Belgrade (2020). https://doi.org/10.18485/infotheca.2019.19.2.3
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Mitigating hydrate formation in onshore gas wells: A case study on optimization techniques and prevention
Gas wells, particularly those situated onshore, play a vital role in the global energy sector by supplying a significant portion of natural gas. However, operational challenges, notably gas hydrate formation, pose substantial issues, leading to complications such as flowline blockages and unexpected well shutdowns. Gas hydrates, crystalline structures resembling ice, ...Gas Well, Gas Hydrate Formation, Well Modeling, Well Performance Optimization, Choke Position Adjustments, Methanol InjectionMilica Ješić, Bojan Martinović, Stefan Stančić, Miroslav Crnogorac, Dušan Danilović. "Mitigating hydrate formation in onshore gas wells: A case study on optimization techniques and prevention" in Underground Mining Engineering, Beograd : Rudarsko-geološki fakultet (2023)
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Gate Road Support Deformation Forecasting Based on Multivariate Singular Spectrum Analysis and Fuzzy Time Series
Luka Crnogorac, Rade Tokalić, Zoran Gligorić, Aleksandar Milutinović, Suzana Lutovac, Aleksandar Ganić (2021)Underground mining engineers and planners in our country are faced with extremely difficult working conditions and a continuous shortage of money. Production disruptions are frequent and can sometimes last more than a week. During this time, gate road support is additionally exposed to rock stress and the result is its progressive deformation and the loss of functionality of gate roads. In such an environment, it is necessary to develop a low-cost methodology to maintain a gate road support system. ...deformacije podgrade, lasersko skeniranje, višekanalna singularna spektralna analiza, prognoza, klasterisanje fuzzy vremenskih serija... very a difficult task. Most underground mines are characterized by low mechanized mining methods and production disruptions can happen often. Such mining methods are characterized by a long production cycle, and if we add disruptions then it is obvious that the gate road support is exposed to the rock ...
... very a difficult task. Most underground mines are characterized by low mechanized mining methods and production disruptions can happen often. Such mining methods are characterized by a long production cycle, and if we add disruptions then it is obvious that the gate road support is exposed to the rock ...
... over the time of observation. Measurements for t = 0, 1, . . . , 5 are used to create a forecast model, while the measurement for t = 6 is used as a control series. Detail calculation is provided for the x coordinates. Figure 7 represents x coordinates of the marker 10 obtained by observation. The inputs ...Luka Crnogorac, Rade Tokalić, Zoran Gligorić, Aleksandar Milutinović, Suzana Lutovac, Aleksandar Ganić. "Gate Road Support Deformation Forecasting Based on Multivariate Singular Spectrum Analysis and Fuzzy Time Series" in Energies, MDPI (2021). https://doi.org/https://doi.org/10.3390/en14123710
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Dimenzionisanje deponija za ugalj
... Stevanović D.R, Kolonja B.M., Stanković RM., Knežević D.N., Banković M. V., 2013, Application of stochastic models for mine planning and coal quality control, www.doiserbia.nb.rs/img/doi/0354-9836/2013%20OnLine-First/ 0354- 98361300031S.pdf 8. Erasmus J. H., Bulk Raw Materials Storage Selection, www.beltcon ...Dinko Knežević, Božo Kolonja, Ranka Stanković, Aleksandra Tomašević, Dragana Nišić. "Dimenzionisanje deponija za ugalj" in Jedanaesta međunarodna konferencija o površinskoj eksploataciji OMC, 2014, Zlatibor, 15-18 oktoba 2014, Zlatibor : Jugoskovenski komitet za površinsku eksploataciju (2014)
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Developing Students’ Mining and Geology Vocabulary Through Flashcards and L1 in the CLIL Classroom
... research in Europe, ed. Y. Ruiz de Zarobe & R. M. Jiménez Catalán, 112-129. Bristol: Multilingual Matters. Nation, Paul. 1998. Helping learners take control of their vocabulary learning. GRETA 6(1): 9-18. Nation, Paul. 2003. Effective ways of building vocabulary knowledge. ESL Magazine 4(3): 22-24. ...
... 5294/laCLIL.2013.6.2.1 eISSN 2322-9721. Lazaro, Amparo, Mayo Garcia, and Maria del Pilar. 2012. L1 use and morphosyntactic development in the oral production of EFL learners in a CLIL context. International Review of Applied Linguistics 50: 135-160. Littlewood, William, and Baohua Yu. 2011. First ...Lidija Beko, Ivan Obradović, Ranka Stanković. "Developing Students’ Mining and Geology Vocabulary Through Flashcards and L1 in the CLIL Classroom" in Proceedings of the Second International Conference on Teaching English for Specific Purposes and New Language Learning Technologies, May, 22-24, 2015, Niš, Serbia, Faculty of Electronic Engineering, University of Niš, Niš : Faculty of Electronic Engineering (2015)
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Formative evaluation of e-learning projects with the logical framework approach
... the project are: complex accomplishment, uniqueness of the output, limited duration, clear and agreed goal, continuous process of planning and control of different resources, interdependent constraints of time-cost-quality [8][9]. All the projects, despite their uniqueness, can be analyzed ...Roberto Linzalone, Giovani Schiuma, Ivan Obradović, Ranka Stanković. "Formative evaluation of e-learning projects with the logical framework approach" in The Sixth International Conference on e-Learning (eLearning-2015), September 2015, Belgrade, Serbia, Belgrade Metropolitan Univesity (2015)
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Effects of Energy Production and Consumption on Air Pollution in Serbia
Marija Živković (2019)Energy production and combustion, mostly from unregulated or inefficient fuel combustion, are the single most important anthropogenic sources of air pollutant emissions. Energy sector in Serbia is highly fossil fuel intensive: 87.88% of energy consumed in Serbia is related to fossil fuels, while almost 95% of energy sources are combusted. In 2017. energy related carbon dioxide emission in Serbia is was 47.95 million tones. The main source of carbon dioxide emission was coal, responsible for almost 70% of energy ...... processes 3, which are the main sources of atmospheric pollution 4. The need to control atmospheric emissions of greenhouse and other gases and substances leads to the necessity of improving efficiency in energy production, transmission, distribution and consumption in the at the global level, or level ...
... EFFECTS OF ENERGY PRODUCTION AND CONSUMPTION ON AIR POLLUTION IN SERBIA Marija Živković University of Belgrade-Faculty of Mining and Geology, Serbia, marija.zivkovic@rgf.bg.ac.rs Abstract: Energy production and combustion, mostly from unregulated or inefficient fuel combustion ...
... is dedicated to reduction of carbon dioxide emission and mitigation of climate changes 5, while other pollutants receive less attention. Energy production and combustion, mostly from unregulated or inefficient fuel combustion, are the single most important anthropogenic sources of air pollutant emissions ...Marija Živković. "Effects of Energy Production and Consumption on Air Pollution in Serbia" in Mining and Environmental Protection-MEP 2019, University of Belgrade, Faculty of Mining and Geology (2019)
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Primena termografije u rudarstvu
Stevan Đenadić, Vesna Damnjanović, Predrag Jovančić, Dragan Ignjatović, Dragutin Jovković, Filip Miletić (2019)Danas, gotovo da nema oblasti u nauci i tehnici u kojoj se Infracrvena termografija ne primenjuje kao metoda za lociranje i praćenje zagrejanih objekata ili tela, beskontaktnu procenu temperature površina, i nedestruktivno ispitivanje materijala. U radu su prikazane mogućnosti i perspektive primene ove metode u oblasti rudarstva.... of fire in Jharia coalfield, Jharkhand, India: an appraisal. Current Science, Vol. 110 (9), pp. 1639-1650, 2016. [12] Industrial Monitoring & Control: Coal Stock pile spontaneuous combustion early detection. URL: https://www.imcontrol.com.au/white-papers/test-white-paper/ [13] Emitted Energy ...Stevan Đenadić, Vesna Damnjanović, Predrag Jovančić, Dragan Ignjatović, Dragutin Jovković, Filip Miletić. "Primena termografije u rudarstvu" in IX Međunarodna konferencija UGALJ 2019, Zlatibor, Srbija, 23-26. oktobar 2019., Jugoslovenski komitet za površinsku eksploataciju (2019)
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Electronic Dictionaries - from File System to lemon Based Lexical Database
In this paper we discuss some well-known morphological descriptions used in various projects and applications (most notably MULTEXT-East and Unitex) and illustrate the encountered problems on Serbian. We have spotted four groups of problems: the lack of a value for an existing category, the lack of a category, the interdependence of values and categories lacking some description, and the lack of a support for some types of categories. At the same time, various descriptions often describe exactly the same ...... data categories, to be used for enabling links to other (lexical) data. The new database offers various possibilities for improvement of SMD, e.g. control of data consistency and introduction of explicit relations between lexical entries. Besides the procedure used for mapping the existing data model ...
... for the cre- ation of a dictionary of markers, that is, data categories and their values (Figure 1). Transition to the database that sup- ports the control of field domains revealed inconsistencies among markers: same markers used for different purposes, different markers used for the same purpose, missing ...
... duhan indi- cated by the marker +VAR=VH assigned to a lemma duvan ‘tobacco’ exist?). Finally, the lack of all these features was an impediment to production of special purpose dictionar- ies: for instance, for purely morphological dictionaries, at- las should be one lemma, while for dictionaries aiming ...Ranka Stanković, Cvetana Krstev, Biljana Lazić, Mihailo Škorić. "Electronic Dictionaries - from File System to lemon Based Lexical Database" in Proceedings of the 11th International Conference on Language Resources and Evaluation - W23 6th Workshop on Linked Data in Linguistics : Towards Linguistic Data Science (LDL-2018), LREC 2018, Miyazaki, Japan, May 7-12, 2018, European Language Resources Association (ELRA) (2018)
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Softverski alati za korišćenje resursa za srpski jezik
Ivan Obradović, Ranka Stanković (2008)... pages which contain other forms of this verb such as, for example, šaljem poruku (I am sending a message). In addition to that the user has no control on the way Google expands the query. Finally, when Serbian is concerned, there is also the problem of two alphabets, Cy- rillic and Latin. If a query ...
... the query morphologically, semantically, but also to another language (English). Besides, WS4QE provides further possibilities for the user to control the query formulation, since in addition to expansion, it also offers a narrowing of the query. SOFTWARE TOOLS FOR SERBIAN LEXICAL RESOURCES ...
... properties of the class are described by a corresponding finite automaton, or trans- ducer1, also labeled Knnn. Thus the transducer Knnn enables the production of all inflections, or morphological forms of the lemma belonging to the Knnn class. The +SinSem marks, which are not obligatory, but if present ...Ivan Obradović, Ranka Stanković. "Softverski alati za korišćenje resursa za srpski jezik" in INFOteka: časopis za informatiku i bibliotekarstvo, Belgrade, Serbia : Zajednica biblioteka univerziteta u Srbiji (2008)
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WebGIS Cadastre of Abandoned Mines in Autonomous Province of Vojvodina
Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis (2015)... application within mineral resource management, ecology management, but also management within official bodies, responsible for legislative legal, control and monitoring activities in realization of the mineral strategy, mineral policy and the concept of sustainable development in the mineral industry ...Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis. "WebGIS Cadastre of Abandoned Mines in Autonomous Province of Vojvodina" in Proceedings of the 5th International Symposium Mining And Environmental Protection,June 10-13,2015, Vrdnik, Serbia, Belgrade : Faculty of Mining and Geology (2015)